Digging In

If you don't already have one in hand, immediately grab a nearby mortar launcher and aim at the cemetery off the front end of the derrick. An emergence hole opens up just right of a tallish spire between two stairways. After that, some locusts pour into the graveyard from the right. Lob mortars—charged about halfway before releasing—to take out the enemies in groups.

Watch carefully for mortar-wielding locusts that appear at the far-right end of the cemetery and be sure to target them immediately so that they don't get you first. A squad of boomers also enters the scene and while they're not as nasty as the mortar crew you'll still want to get 'em quickly.

Near the end of this battle, a pair of reavers drops into the graveyard and take aim at your rig. If you've got mortars left (and we hope you do), launch 'em at full charge to hit the distant enemies. If they don't go down from the mortar rounds, finish the pair with machinegun fire. The rig's turret is open, but unless you're real lucky it's probably already destroyed.